Sketchup can be configured so many different ways. You can add your own plugins, styles, components, and templates to name a few.
One of the most important things to set in Sketchup is your default workspace. When you start Sketchup for the first time, you get a choice of several different templates. Most of the templates are aimed at architects and engineers.
To make life easier for us designers, I have created a custom template that you can download and install into your Sketchup. Why do all the work when I have already done it for you! This template includes the corect drawing units (inches) and some custom styles for your designs.
Check out this video on how my template works:
To download this template for yourself, head on over to the download section of SketchThis.NET